Snap-hook



(No Model.)

* H. U. KISTNER.

SNAP HOOK.

No. 371,690. Patented Oct. 18, 1887.

WITNESSESZ UNITED STATES PATENT OFFICE.

HARRY U. KISTNER, OF BORDENTOlVN, NEWV JERSEY.

SNAP-HOOK.

SPECIFICATION forming part 01' Letters Patent No. 37l,90.dated October 18, 1857,

(No model.)

To aZZ whont it may concern.-

Be it known that I, HARRY U. KISTNER, a citizen of the United States, residing at Bordentown, in the county ofBurlington, State of 5 New Jersey, have invented a new and useful Improvement in HarnessSnaps or Snap- Hooks, which improvement is fully set forth in the following specification and accompanying drawings, in which Figure 1 represents a side elevation of a snap-hook embodying my invention. Fig. 2 rep-resents a partial side elevation and partial section thereof. Fig. 3 represents an elevation at a right angle to Fig. l, the closing jaw of the hook being removed. Fig. 4 represents a section in line a: 00, Fig. 2. Fig. arepresents aperspect-ive view-0f another form of snaphook embodying my invention.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists in a snap-hook having its shank formed with a recess for a spring and its movable jaw provided with a thumbpiece, the lower portion of which is adapted to enter said recess when the said jaw is de pressed.

It also consists in providing the said shank with throats leading from said recess and the movablejaw with necksadapted to enter said throats, as hereinafter set forth and claimed.

Referring to the drawings, A represents the shank or body of a snap-hook; B,the movable jaw, pivoted at a; O, the hook portion or stationary jaw, and D the loop thereof, said parts in general respects being of usual construction.

The shank A has a round or cylindrical chamber, E, for the reception of the coiled spring F, which bears against the inner or under side of the j aw B, for closing said jaw and holding it in closed position, it being noticed that the outer side of the jaw has a thumbpiece, G, whereby the jaw may be readily opened, it being also noticed that said piece is of cylindrical form and adapted to enter the chamber E when the jaw is depressed.'

The portions of the jaw on opposite sides of the thumb-piece G are reduced, forming necks H H, and the shank A has throats J J on opposite sides of the chamber E to receive said necks H when thejaw is depressed, it be ing noticed that said throats are in communication with the chamber and are of less width than the diameter thereof.

It will now be seen that the spring F occupies the chamber E and cannot enter the throats J, and is furthermore confined by the jaw B and base of the chamber E, whereby said spring is retained in position by the jaw B and shank A without the necessity of special fastenings.

I am aware that it is common to provide the shank of a snap-hook with a recess adapted to contain the spring which closes the movable jaw; but I am not aware that the movable jaw has been constructed, except as herein claimed, with a thumb piece having its lower end adapted to enter the springrecess, as herein shown and illustrated.

Having thus described my invention, whatI claim as new, and desire to secure by Letters Patent, is-

A snap-hook consisting of the shank A,with hook portion 0, and the cylindrical chamber E, having the throats J J on opposite sides thereof, the movable jaw B, pivoted at a to the shank A and having a thumbpiece, G, thereon, and necks H H on the sides of said thumb-piece, and the coil-springF on the under side of said movable jaw 13 and in said chamber E, substantially as described.

HARRY U. KISTNER.

\Vitnesses:

PHILIP S. SoovEL, J ol-IN A. WIEDERsHEIM. 

